---
title: "startSynchronization(source:)"
framework: AVFoundation
role: symbol
role_heading: Instance Method
platforms: [iOS 26.0+, iPadOS 26.0+, Mac Catalyst 26.0+, macOS 26.0+, tvOS 26.0+]
path: "avfoundation/avcapturetimecodegenerator/startsynchronization(source:)"
---

# startSynchronization(source:)

Synchronizes the generator with the specified timecode source.

## Declaration

```swift
func startSynchronization(source: AVCaptureTimecode.Source)
```

## Parameters

- `source`: The timecode source for synchronization.

## See Also

### Managing sources

- [currentSource](avfoundation/avcapturetimecodegenerator/currentsource.md)
- [availableSources](avfoundation/avcapturetimecodegenerator/availablesources.md)
- [frameCountSource](avfoundation/avcapturetimecodegenerator/framecountsource.md)
- [realTimeClockSource](avfoundation/avcapturetimecodegenerator/realtimeclocksource.md)